Fire-alarm and annunciator system



No Model.)

I'. S. PALMER.

FIRE ALARM AND ANNUNGIATOR SYSTEM. No. 530,648. y Patented Deo. l1, 1894.

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UNITED STATESl PATENT OFFICE.,

- ,EEEDRICK sUMNER PALMER., E BOSTON, MASSAGEUsETTs.v

FIRE-ALARM AND ANNUNCI'ATOR SYSTEM'.

SPECIFICATION forming part of Letters Patent No. 530,648, dated December 11,1894. 'I Application filed March 24, 18794. Sen'al No. 504,940. (No model.)

To all whom it may concern:

Be it known that I, FREDRICK SUMNEE PALMER, a citizen of the UnitedStates, residing at Boston, in the county of Sulolk and State o f Massachusetts, haveinvented certain new and useful Improvements in a Combined 'Fire-Alarm and Annunciator System; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to electric systems employed for sounding an alarm, either in the event of a fire or to serve as a call, such asis covered by the term annunciator, which instrument is in very commonuse in hotels orl other public places.

The object of my invention is to enable an annunciator system in which a push-'button is em ployed,tobe connected with and j oined electrically with a fire-alarm system, containing a transmitter, the purpose of my invention being primarily to save the cost of double wiring hitherto necessary; in other words in lieu of having a separate system of wires for the annunciator system and also one for theviire system, to employ thelatter wires as a circuit.

The drawings represent in Figure 1 a combined fire-alarm and annunciator system under my invention, the fire-alarm being shown only in diagram, as necessary for the proper illustration of my invention. Fig. 2 shows an enlarged View of the thermostats together with a push-button and all represented in their normal positions.

.As beforepremised, it is very desirable to employ a push-button on a call system in connection with an automatic tire-alarm circuit, and thus enable a person to use the fire system for ordinary wants, but further t0 permit the fire system to remain inactive except at such times when lire may occur.

My invention may be applied to any tire alarm system having an inner and outer line4 lower one presumably a store, the second door containing suites of rooms as indicated by the broken lines ink Fig. 1*. The outer wire ais common to both floors, while separate inner wires b c are used for dierent ioors. A. represents test clock. D. is a magnet. E is a test switch; H. vibrating bell at door of building; I., battery for tire system; J., battery for gong; K., in engine house; L., transmitter; M., lire alarm drop on the building to indicate individual floors. Various binderposts 1, 2, 3, 5, 6, 8, 9, 10, 15, 16, 17 serve to connect various Vparts of the system, as will be briefly hereinafter described.

- In the normal condition starting at the positive side of the open circuit battery I. to binder `post 15, the first path is to magnet Q. This path is open at the dotted spring 11. Hence the current takes the path to spring 9',

thence to 92, to magnet D. of the transmitter,

to binder post 1, vibrating,r bell H. to post 2,

where it distributes itself over the wires b c of the several tloors.

In the event of a general lire thev thermostats d, d', create a short-circuit between the wires a. b and a c. Now for example assume the fire is in the second floor and the thermostat d' is in operation. The current now passes over the battery I. to post 15, through springs 9, 92,10 magnet D. moving armature and releasing transmitter L., which causes four blows to be sounded on the gong K. showingbox 4 at indicator in engine house. From magnet D. the current goes to springs 42 4', binder posts 5 or 6, and common wire a, through thermostat d', to-binder post 9 or 10,

'the path offering the least resistance; from post 10 to drop M. indicating second iioor; from thence to post 3, to spring 2 22, to Aspring 12, 1', vibrating bell H., post 1, and negaf tive side of battery I. thus completing the circuit.

IDO

the oce annunciator N. with a vibrating bell T. while a common wire 2l extends to a secondary battery C. This is joined to the outer Wire a of the fire alarm system by the spring It 42. The thermostats e e2 e3 on the annunciator system are not arranged to shortcircuit with the inner wires of the fire system, but have a loop Wire 23 232 233, to

binding posts 24 242 243. Hence in my invention as designed for hotel purposes and applied to a ire alarm system, two thermostats are employed in each room and they may be placed under one rosette 25. A'guest in a room s2 calls for ice water. The pushbutton is closed and the current passes from the battery C. to outer wires a, to push-button B; thence to hotel annunciator N. indicating room s2, through the bell T. to battery C; thus completing the circuit and with no disturbance of the tire alarm system. In the event of a tire in said room s2 the action of the tire alarm system is identical with that heretofore described, the thermostat d2 short-circuiting the Wires ct c; but furthermore, the second thermostat e2 closes the annunciator system by aid of loop wire 232, the same as if the push-button had been operated. Hence the following results are accomplished simultaneously: the calling` of the tire department to building 4; operating the drop M; indicating secondiioor; ringing bell H., operating drop 2 at annunciator N, ringing the bell, and calling attentionto the fact that there is a fire in room 2 second story. In this way the occupants of the building are enabled to make an attempt to extinguish the fire before the arrival of the lire department. lVhat I claim is l. In combinationwith a fire alarm system, a call system, and independent batteries for each system, two thermostats electrically united with the fire system, one thermostat being arranged to short-circuit the battery in the lire system through said system, the other thermostat to shortcircuit thebattery in the call system through the annunciator apparatus of said system, and through the tirer system in part, substantially as described.

2. The combination with a fire alarm system having inner and outer Wires, a battery therefor, and thermostats which short-circuit said wires, of a second call system, a battery therefor, annunciator apparatus, a Wire which unites the outer wire of the fire system with the call system, Wires from the call system to the several rooms of a building, and room thermostats which electrically join the lire alarm system with the individual room systems to operate the call system, substantially as stated.

3. A tire alarm system having inner floor wires, a single outer wire, a battery therefor, and thermostats which short-circuit theinner and outer wires in time of danger, combined with a call system, a battery for this system, Wires to various rooms, annunciator apparatus, a wire therefrom t0 the battery, and thermostats in the rooms which are joined to outer re alarm wire, and means to electrically unite such thermostats with individual call wires initheir respective rooms, substantially as explained.

In testimony whereof I affix my signature in presence of two Witnesses.

FREDRICK SUMNER PALMER.

Witnesses: l

II. E. LODGE,

E. K. BoYNToN. 

